(-)-乳酸乙酯

无色至微黄色液体,易溶于醇、醚、酮类、酯类、油类，与水混溶并部分分解。
熔点：-26℃
沸点：154℃
密度：1.034
折光率n20/D：1.413
闪点：46℃

98%:


外观Appearance                      无色至微黄色透明液体
纯度Purity                          ≥98.0%(GC)
相对密度Specific gravity (20/20°C) 1.030 - 1.0380
折光率Refractive index n20/D        1.4120 - 1.4140
比旋度Specific rotation [a]20/D     -8° ～ -12°(neat)


99%:

外观Appearance                      无色至微黄色透明液体
纯度Purity                          ≥99.0%(GC)
相对密度Specific gravity (20/20°C) 1.030 - 1.0380
折光率Refractive index n20/D        1.4120 - 1.4140
比旋度Specific rotation [a]20/D     -8° ～ -12°(neat)
酸度Acidity                        
<0.08 % (as lactic acid) >非挥发性物质Non-volatile matter    
<0.01 %>乙醇EtOH                            ≤0.1 %



项目                                光致抗蚀剂级
                                  （photoresist grade）
含量assay                           ≥99.0% (Sum of enantiomers, GC)
光学活性optical activity [α]20/D    −9.5～11.5°, neat
游离酸free acid                     ≤0.025%
水分water                           ≤0.1%  
蒸发残渣evapn. residue              <0.01%
Ca:                                 ≤0.01 ppm
Cr:                                 ≤0.01 ppm
Cu:                                 ≤0.01 ppm
Fe:                                 ≤0.01 ppm
K:                                  ≤0.01 ppm
Mg:                                 ≤0.01 ppm
Mn:                                 ≤0.01 ppm
Na:                                 ≤0.01 ppm
Ni:                                 ≤0.01 ppm
Pb:                                 ≤0.01 ppm